MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Materials Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Grain boundaries are one of the causes of corrosion of metals? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which of the following is not a property of metal glass? |
| A. | Transparent |
| B. | Poor thermal conductivity |
| C. | High magnetic susceptibility |
| D. | None of the mentioned |
| Answer» B. Poor thermal conductivity | |
| 3. |
The smallest portion of a crystal which when repeated in different directions generates the entire crystal is called: |
| A. | Lattice points |
| B. | Crystal lattice |
| C. | Unit cell |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 4. |
WHICH_OF_THE_FOLLOWING_IS_NOT_A_PROPERTY_OF_METAL_GLASS??$ |
| A. | Transparent |
| B. | Poor thermal conductivity |
| C. | High magnetic susceptibility |
| D. | None of the mentioned |
| Answer» B. Poor thermal conductivity | |
| 5. |
Grain_boundaries_are_one_of_the_causes_of_corrosion_of_metals?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
The smallest portion of a crystal which when repeated in different directions generates the entire crystal is called? |
| A. | Lattice points |
| B. | Crystal lattice |
| C. | Unit cell |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 7. |
Which of the following is a property of amorphous solids? |
| A. | Sharp melting point |
| B. | Isotropy |
| C. | Long range order |
| D. | Definite heat of fusion |
| Answer» C. Long range order | |
| 8. |
An octahedral void is surrounded by: |
| A. | 8 atoms |
| B. | 18 atoms |
| C. | 6 atoms |
| D. | 16 atoms |
| Answer» D. 16 atoms | |
| 9. |
HCP and BCC are called close-packed structures. Close packed structures have: |
| A. | Highest packing efficiency |
| B. | Highest void fraction |
| C. | Highest density |
| D. | All of the mentioned |
| Answer» B. Highest void fraction | |
| 10. |
Packing efficiency of a crystal structure is the ratio of: |
| A. | Volume occupied by particles to the total volume of the unit cell |
| B. | Volume occupied by particles to that by voids |
| C. | Total volume of the unit cell to the volume occupied by particles |
| D. | Volume occupied by voids to that by particles |
| Answer» B. Volume occupied by particles to that by voids | |
| 11. |
Co-ordination number of a crystalline solid is: |
| A. | Number of particles in the unit cell |
| B. | Number of nearest neighbours of a particle |
| C. | Number of octahedral voids in a unit cell |
| D. | Number of tetrahedral voids in a unit cell |
| Answer» C. Number of octahedral voids in a unit cell | |
| 12. |
Allotropes differ in which of the following properties: |
| A. | Atomic Number |
| B. | Atomic Mass |
| C. | Crystal Structure |
| D. | Electronegativity |
| Answer» D. Electronegativity | |